Crain Fire Investigation and Consulting Plumbing Failures Automotive Lock Analysis Alabama Tennessee Florida Mississippi



Office: 205-995-8231

Fax: 205-995-8232

Toll free: 877-245-6989

Licensed and practicing in:





  October 22 - Sunday - Local time: 23:19 (CDT) Working too late!



Submit assignment





Forensic Laboratory Services










  • Artifact evidence inspection.
  • Stereo Microscope with still or video capture.
  • Non-destructive and destructive.
  • Exemplar testing and evaluation.
  • Photographic and video documentation.












Faucet washer leaking. Contact surface with seat is uniform indicating "normal wear," except in one area. Wear pattern is almost twice as wide indicating uneven contact with seat (leak).



Arcing on a steel ground strap.



The image on the left is an electric range control that is OFF and the one on the right is ON. The yellow arrows are pointing to the detent on the stem, which is rotated when the switch is turned ON. In the left image; the mating parts of the detent are engaged in the OFF position (approx. 11:00 o'clock). In the right image; the detent on the stem has been rotated to the 4:00 o'clock position, which is ON.











Below is an image of an automotive seat belt with the buckle engaged. The yellow arrows are pointing to debris and dirt in the body of the buckle.



The red line and arrow are indicating the locking pin is not completely or properly engaged. This buckle will likely come apart and release the occupant during an accident.

Under a closer view the shadowing clearly reveals the dirt and debris present.





Our laboratory is available for "Third party inspections."

Climate controlled, well lit and with plenty of room (550 square feet). If needed, there is a 700 square foot shop behind the laboratory.


  • Two large exam tables with plenty of seating.
  • Web conferencing available for those who cannot attend in person.





On premises secure evidence storage is also available.



Clothes Dryer Venting

Dryer manufacturers supply information on the proper venting of the appliance in the literature accompanying the machine. There are limits on the overall length of the vent, the maximum height above the appliance the vent can terminate, how many turns are allowed and more.  The type of vent material used is also specified and is very important.



Improper material used and / or improper installation leads to reduced air flow or complete obstructions, which in turn leads to the build-up of lint inside the machine.  Layers of lint accumulate in all machines over time, but when there is a deficiency in the venting, the lint will build up to the point that a “clump” can break away from the layers and travel through the heater box and become ignited.  Many times the ignited ember will then travel into the clothes load and a fire has started.

The investigation is not complete until the vent has been documented to determine its adequacy.

For more information, contact us: Dryer Fire!

Artifact evidence inspection


Stereo microscope



Exemplar testing


Secure evidence storage
Untitled Document